UI 자동화를 위해 바인딩 기능 구현

- 유니티 에셋 인증 오류로 meta 재생성

Packages/com.unity.inputsystem/InputSystem/Plugins/UI/UISupport.cs

@@ -0,0 +1,21 @@
+using UnityEngine.InputSystem;
+
+////FIXME: This should be UnityEngine.InputSystem.UI
+
+#if UNITY_DISABLE_DEFAULT_INPUT_PLUGIN_INITIALIZATION
+public
+#else
+internal
+#endif
+static class UISupport
+{
+    public static void Initialize()
+    {
+        InputSystem.RegisterLayout(@"
+            {
+                ""name"" : ""VirtualMouse"",
+                ""extend"" : ""Mouse""
+            }
+        ");
+    }
+}